一、單個controller範圍的異常處理
package com.xxx.secondboot.web;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import com.xxx.secondboot.exception.MyExceptionResponse;
import io.swagger.annotations.Api;
@Api("測試controllerAdvice和全局異常處理")
@RestController
@RequestMapping("/advice1")
public class AdviceController {
@RequestMapping(value = "/test1", method = RequestMethod.GET)
public String test1() {
throw new RuntimeException("advice1 - exception1");
}
@RequestMapping(value = "/test2", method = RequestMethod.GET)
public String test2() {
throw new RuntimeException("advice1 - exception2");
}
@ExceptionHandler(RuntimeException.class)
public MyExceptionResponse exceptionHandler() {
MyExceptionResponse resp = new MyExceptionResponse();
resp.setCode(300);
resp.setMsg("exception-Handler");
return resp;
}
}
說明:
- 在controller中加入被@ExceptionHandler修飾的類即可(在該注解中指定該方法需要處理的那些異常類)
- 該異常處理方法隻在目前的controller中起作用
二、全部controller範圍内起作用的異常處理(全局異常處理)
1、全局異常處理類
package com.xxx.secondboot.web;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.xxx.secondboot.exception.MyExceptionResponse;
import com.xxx.secondboot.exception.MyRuntimeException;
//@ControllerAdvice(annotations=RestController.class)
//@ControllerAdvice(basePackages={"com.xxx","com.ooo"})
@ControllerAdvice
public class GlobalExceptionHandler {
@ExceptionHandler(RuntimeException.class)
// @ExceptionHandler(value={RuntimeException.class,MyRuntimeException.class})
// @ExceptionHandler//處理所有異常
@ResponseBody //在傳回自定義相應類的情況下必須有,這是@ControllerAdvice注解的規定
public MyExceptionResponse exceptionHandler(RuntimeException e, HttpServletResponse response) {
MyExceptionResponse resp = new MyExceptionResponse();
resp.setCode(300);
resp.setMsg("exception-Handler");
// response.setStatus(600);
return resp;
}
}
說明:
- @ControllerAdvice是controller的一個輔助類,最常用的就是作為全局異常處理的切面類
- @ControllerAdvice可以指定掃描範圍
- @ControllerAdvice約定了幾種可行的傳回值,如果是直接傳回model類的話,需要使用@ResponseBody進行json轉換
- 傳回String,表示跳到某個view
- 傳回modelAndView
- 傳回model + @ResponseBody
2、controller
package com.xxx.secondboot.web;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import io.swagger.annotations.Api;
@Api("測試controllerAdvice和全局異常處理")
@RestController
@RequestMapping("/advice1")
public class AdviceController {
@RequestMapping(value = "/test1", method = RequestMethod.GET)
public String test1() {
throw new RuntimeException("advice1 - exception1");
}
@RequestMapping(value = "/test2", method = RequestMethod.GET)
public String test2() {
throw new RuntimeException("advice1 - exception2");
}
// @ExceptionHandler(RuntimeException.class)
// public MyExceptionResponse exceptionHandler() {
// MyExceptionResponse resp = new MyExceptionResponse();
// resp.setCode(300);
// resp.setMsg("exception-Handler");
// return resp;
// }
}
注意:
- 同一個異常被局部範圍異常處理器和全局範圍異常處理器同時覆寫,會選擇小範圍的局部範圍處理器
- 同一個異常被小範圍的異常類和大範圍的異常處理器同時覆寫,會選擇小範圍的異常處理器
參考自:
- http://jinnianshilongnian.iteye.com/blog/1866350 開濤的@ControllerAdvice(三個作用)
- http://www.tuicool.com/articles/fA7nuii springboot約定的異常處理體系
- https://spring.io/blog/2013/11/01/exception-handling-in-spring-mvc springMVC異常處理體系
- http://www.baeldung.com/2013/01/31/exception-handling-for-rest-with-spring-3-2/ springMVC異常處理體系